EXCLUSIVE: Watch Tituss Burgess Preview New Carner and Gregor Single

"Unbreakable Kimmy Schmidt" star Tituss Burgess stepped to the microphone to sing Sam Carner and Derek Gregor's "Advice to a Young Firefly" at the March 30 performance of Broadway's Future, presented by Lincoln Center's Public Library for the Performing Arts. The tune is from Carner and Gregor's musical Toast. The song was released yesterday as a single and is available for download.